Autofill on Android 12 doesn't seem to work

I've been having problems since I changed from a Samsung S20+ to a Samsung S22+. The S20+ was on Android 12 (OneUI 4.0) before I changed over, and as far as I can remember autofill was working fine for apps and the built-in Samsung browser using Gboard. However, it has never worked on the S22+ since I bought it. All I get is the "Search 1Password" and "Create a new login" options, but no entry in the list to fill the password for the site/app I am using. It makes what used to be a breeze filling passwords on my phone (which can be fiddly at the best of times) much more of a faff. It's not horrendous, but definitely not as nice and easy as it used to be. All autofill options are switched on, battery optimisation is set to "unrestricted" and yet it still won't work. Something has changed and it is making logging into some apps, like Paypal, unusable and I am having to change back to SMS messages for 2FA as to autofill the OTP from 1Password I have to leave the app to go into 1Password to copy the code, which causes the Paypal app to close down. If there is any advice as to get this working, or if it is even possible, I'd be grateful to receive it.

Thanks

Alex